/* ---------- theme tokens ---------- */
:root,
[data-theme="dark"] {
  --bg: #00121e;
  --text: #ffffff;
  --accent: #ffffcc;

  --btn-bg: #000000;
  --btn-text: #ffffff;
  --btn-text-hover: #ffffcc;

  --plus-accent: #eeba2b;

  --save-btn-bg: #ffffff;
  --save-btn-text: #000000;
}

[data-theme="light"] {
  --bg: #ffffcc;
  --text: #000000;
  --accent: #00121e;

  --btn-bg: #ffffff;
  --btn-text: #000000;
  --btn-text-hover: #00121e;

  --plus-accent: #3b0a0a;

  --save-btn-bg: #000000;
  --save-btn-text: #ffffff;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  transition: background 0.15s ease, color 0.15s ease;
}

.wrap {
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
}

/* ---------- intro ---------- */
.intro { margin-bottom: 2.5rem; }

.title {
  font-family: "VT323", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 2.25rem;
  font-weight: 500;
  font-style: regular;
  color: var(--accent);
  margin: 0 0 1rem;

}

.title .plus {
  color: var(--plus-accent);
}

.lead {
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.05rem;
  line-height: 1.6;
  max-width: 60ch;
  color: var(--text);
  margin: 0;
}

.lead + .lead {
  margin-top: 0.9rem;
}

.accent-text {
  color: var(--accent);
}

.info-toggle {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0;
  background: none;
  border: none;
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

.info-toggle:hover {
  opacity: 0.8;
}

/* ---------- button grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.9rem;
}

.op {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 1rem 1.1rem;
  text-align: left;
  cursor: pointer;
  font-family: "IBM Plex Serif", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.op span {
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  opacity: 0.8;
}

.op:hover,
.op:focus-visible {
  color: var(--btn-text-hover);
  border-color: var(--btn-text-hover);
}

.op:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* csvkit+ specific branding: csvedit gets its own accent color on hover,
   #eeba2b in dark mode, #3b0a0a in light mode */
.op-plus:hover,
.op-plus:focus-visible {
  color: var(--plus-accent);
  border-color: var(--plus-accent);
}

/* ---------- operation page ---------- */
.op-page main.wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.back-link {
  color: var(--text);
  opacity: 0.7;
  text-decoration: none;
  font-size: 0.9rem;
  align-self: flex-start;
}

.back-link:hover { opacity: 1; color: var(--accent); }

.drop-zone {
  border: 2px dashed color-mix(in srgb, var(--text) 30%, transparent);
  border-radius: 10px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent);
}

.output-area {
  flex: 1;
  overflow: auto;
}

.output-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
}

.output-table th,
.output-table td {
  border: 1px solid color-mix(in srgb, var(--text) 20%, transparent);
  padding: 0.4rem 0.6rem;
  text-align: left;
}

.output-table th {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- json output view (csvjson) ---------- */
.json-view {
  font-family: "IBM Plex Sans", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  background: color-mix(in srgb, var(--text) 6%, transparent);
  border: 1px solid color-mix(in srgb, var(--text) 20%, transparent);
  border-radius: 8px;
  padding: 1rem;
  margin: 0;
}

/* ---------- options panel (csvcut/csvgrep/csvsort) ---------- */
.options-panel {
  display: none;
  flex-direction: column;
  gap: 1rem;
  border: 1px solid color-mix(in srgb, var(--text) 20%, transparent);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
}

.options-panel.visible { display: flex; }

.options-panel label.field-label {
  font-family: "IBM Plex Serif", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 600;
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  display: block;
}

.col-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
}

.col-picker label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.col-picker input[type="checkbox"],
.col-picker input[type="radio"] {
  accent-color: var(--accent);
}

.field-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.text-input,
.select-input {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid color-mix(in srgb, var(--text) 30%, transparent);
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.95rem;
}

.text-input:focus,
.select-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.dir-toggle {
  display: flex;
  gap: 0.6rem;
}

.dir-toggle label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.run-btn {
  align-self: flex-start;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--btn-text);
  border-radius: 8px;
  padding: 0.55rem 1.2rem;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.run-btn:hover {
  color: var(--btn-text-hover);
  border-color: var(--btn-text-hover);
}

.options-panel .section-block {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--text) 15%, transparent);
}

.options-panel .section-block:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.options-panel .section-heading {
  font-family: "IBM Plex Serif", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 700;
  color: var(--text);
  font-size: 1rem;
  margin: 0;
}

.options-panel .section-sub {
  font-size: 0.85rem;
  opacity: 0.75;
  margin: -0.5rem 0 0;
}

/* ---------- two-up layout (csvjoin drop zones + column selects) ---------- */
.join-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.join-columns > * {
  flex: 1;
  min-width: 220px;
}

/* ---------- file chip list (csvstack) ---------- */
.file-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid color-mix(in srgb, var(--text) 30%, transparent);
  border-radius: 999px;
  padding: 0.35rem 0.5rem 0.35rem 0.9rem;
  font-size: 0.85rem;
}

.file-chip .remove-btn {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0.1rem 0.3rem;
  border-radius: 999px;
}

.file-chip .remove-btn:hover {
  color: var(--accent);
}

/* ---------- action row (save + clear, always-visible clear) ---------- */
.action-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.clear-btn {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--text);
  border-radius: 8px;
  padding: 0.55rem 1.2rem;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.clear-btn:hover {
  opacity: 0.7;
}

/* ---------- save (download) ---------- */
.save-row {
  display: none;
}

.save-row.visible {
  display: flex;
}

.save-btn {
  background: var(--save-btn-bg);
  color: var(--save-btn-text);
  border: 1px solid var(--save-btn-text);
  border-radius: 8px;
  padding: 0.55rem 1.2rem;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.save-btn:hover {
  opacity: 0.85;
}

.save-box {
  display: none;
  flex-direction: column;
  gap: 0.7rem;
  border: 1px solid color-mix(in srgb, var(--text) 20%, transparent);
  border-radius: 10px;
  padding: 1rem 1.25rem;
}

.save-box.visible {
  display: flex;
}

.save-box-actions {
  display: flex;
  gap: 0.6rem;
}

/* ---------- editable grid (csvedit / csvcreate grid mode) ---------- */
.edit-toolbar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.edit-grid {
  overflow-x: auto;
}

.edit-table th,
.edit-table td {
  padding: 0.25rem;
}

.cell-input {
  width: 100%;
  min-width: 90px;
  background: transparent;
  color: inherit;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 0.35rem 0.45rem;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.9rem;
}

.cell-input:hover {
  border-color: color-mix(in srgb, var(--text) 25%, transparent);
}

.cell-input:focus {
  outline: none;
  border-color: var(--accent);
}

.header-input {
  font-weight: 600;
  color: var(--accent);
}

.remove-row-btn,
.remove-col-btn {
  background: none;
  border: none;
  color: inherit;
  opacity: 0.6;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0.1rem 0.3rem;
}

.remove-row-btn:hover,
.remove-col-btn:hover {
  opacity: 1;
  color: #e85c5c;
}

.hidden { display: none !important; }

/* ---------- mode toggle (csvcreate: grid vs text) ---------- */
.mode-toggle {
  display: flex;
  gap: 0.5rem;
}

.mode-btn {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid color-mix(in srgb, var(--text) 30%, transparent);
  border-radius: 8px;
  padding: 0.45rem 1rem;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
}

.mode-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

.text-mode-panel {
  display: none;
  flex-direction: column;
  gap: 0.7rem;
}

.text-mode-panel.visible { display: flex; }

.textarea-input {
  min-height: 200px;
  resize: vertical;
  font-family: "IBM Plex Sans", ui-monospace, monospace;
}

/* ---------- terminal status screen ---------- */
.terminal {
  --lcd-blue: #6fc3e6;
  --lcd-red: #e85c5c;
  background: var(--lcd-blue);
  box-shadow: 0 0 18px 2px var(--lcd-blue);
  border: 3px solid #000;
  border-radius: 4px;
  padding: 0.6rem 1rem;
  min-height: 4.2rem;
  font-family: "VT323", ui-monospace, monospace;
  font-size: 1.4rem;
  line-height: 1.25;
  color: #000;
  overflow: hidden;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.terminal.error {
  background: var(--lcd-red);
  box-shadow: 0 0 18px 2px var(--lcd-red);
}

.terminal-line {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- footer ---------- */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--text) 15%, transparent);
}

.foot-link {
  background: none;
  border: none;
  color: var(--text);
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.foot-link:hover { color: var(--accent); }

/* light-switch style theme toggle */
.switch-track {
  width: 34px;
  height: 20px;
  border: 2px solid currentColor;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 3px;
}

.switch-lever {
  width: 12px;
  height: 100%;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.15s ease;
}

[data-theme="light"] .switch-track { justify-content: flex-end; }

.theme-toggle[aria-pressed="true"] .switch-lever {
  /* lever sits at right when the switch is "on" (light mode) */
}

/* ---------- drag handles + sort buttons (csvedit / csvcreate grid) ---------- */
.th-inner {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.th-inner .header-input {
  flex: 1;
}

.sort-btns {
  display: flex;
  flex-direction: column;
  line-height: 0.7;
}

.sort-btn {
  background: none;
  border: none;
  color: inherit;
  opacity: 0.55;
  cursor: pointer;
  font-size: 0.6rem;
  padding: 0.05rem 0.15rem;
}

.sort-btn:hover {
  opacity: 1;
  color: var(--accent);
}


/* ---------- stubbed DB actions (csvsql insert / sql2csv run-to-db, until
   the Neon backend relay exists) ---------- */
.stub-btn {
  opacity: 0.55;
}

.stub-btn:hover {
  opacity: 0.75;
}

/* ---------- DB connect / disconnect UI ---------- */
.db-connect {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.db-status-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.9rem;
}

.db-status-text {
  color: var(--accent);
  font-family: "IBM Plex Serif", monospace;
  font-weight: 600;
}

.db-form,
.db-confirm {
  /* reuses .save-box's hidden-by-default/.visible pattern */
}

/* ---------- schema browser (sql2csv table/column picker) ---------- */
.schema-panel {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.schema-table {
  border: 1px solid color-mix(in srgb, var(--text) 20%, transparent);
  border-radius: 8px;
  overflow: hidden;
}

.schema-table-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  padding: 0.55rem 0.9rem;
  font-family: "IBM Plex Serif", monospace;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.schema-table-toggle:hover {
  color: var(--accent);
}

.schema-caret {
  opacity: 0.6;
  font-size: 0.8rem;
}

.schema-columns {
  display: flex;
  flex-direction: column;
  padding: 0.4rem 0.9rem 0.6rem;
}

.schema-column {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 0.2rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
}

.schema-column:last-child {
  border-bottom: none;
}

.col-type {
  opacity: 0.6;
  font-family: "IBM Plex Sans", monospace;
}

.insert-confirm {
  /* reuses .save-box's hidden-by-default/.visible pattern */
}

.stack-panel {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

/* ---------- about page ---------- */
.about-wrap {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about-title {
  font-family: "IBM Plex Serif", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0;
}

.about-title .plus {
  color: var(--plus-accent);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.about-section h2 {
  font-family: "IBM Plex Serif", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 500;
  font-size: 1.4rem;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.about-section p {
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.2;
  max-width: 65ch;
  color: var(--text);
  margin: 0;
}